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feat: replace single bit range constraints with basic bool gates #4164

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Jan 25, 2024
Merged

feat: replace single bit range constraints with basic bool gates #4164

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4 changes: 3 additions & 1 deletion barretenberg/cpp/src/barretenberg/proof_system/circuit_builder/ultra_circuit_builder.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -779,7 +779,9 @@ class UltraCircuitBuilder_ : public CircuitBuilderBase<typename Arithmetization:
std::string const msg = "create_new_range_constraint");
void create_range_constraint(const uint32_t variable_index, const size_t num_bits, std::string const& msg)
{
if (num_bits <= DEFAULT_PLOOKUP_RANGE_BITNUM) {
if (num_bits == 1) {
create_bool_gate(variable_index);
} else if (num_bits <= DEFAULT_PLOOKUP_RANGE_BITNUM) {
/**
* N.B. if `variable_index` is not used in any arithmetic constraints, this will create an unsatisfiable
* circuit!
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